145225277 has 2 divisors, whose sum is σ = 145225278. Its totient is φ = 145225276.

The previous prime is 145225273. The next prime is 145225309. The reversal of 145225277 is 772522541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83429956 + 61795321 = 9134^2 + 7861^2 .

It is a cyclic number.

It is not a de Polignac number, because 145225277 - 2² = 145225273 is a prime.

It is a Chen prime.

It is equal to p_8190494 and since 145225277 and 8190494 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145225273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72612638 + 72612639.

It is an arithmetic number, because the mean of its divisors is an integer number (72612639).

Almost surely, 2^145225277 is an apocalyptic number.

It is an amenable number.

145225277 is a deficient number, since it is larger than the sum of its proper divisors (1).

145225277 is an equidigital number, since it uses as much as digits as its factorization.

145225277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 35.

The square root of 145225277 is about 12050.9450666742. The cubic root of 145225277 is about 525.6307183133.

The spelling of 145225277 in words is "one hundred forty-five million, two hundred twenty-five thousand, two hundred seventy-seven".